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Finding the Fourth Proportional to 6,300.64, 8,700.68 and 4,066.39

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Solution

The fourth proportional to 6,300.64, 8,700.68 and 4,066.39 is: 5,615.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,300.64 : 8,700.68 = 4,066.39 : x
  2. Step 2: Convert to fraction form
    6,300.64/8,700.68 = 4,066.39/x
  3. Step 3: Cross multiply
    6,300.64x = 8,700.68 × 4,066.39
  4. Step 4: Simplify right side
    6,300.64x = 35,380,358.15
  5. Step 5: Solve for x
    x = 35,380,358.15/6,300.64
  6. Step 6: Final answer
    x = 5,615.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.